MEI: Synqnet update, new 64-bit controller

SynqNet—a full digital, high-speed (100 Mbps) synchronous motion control network for intelligent multi-axis servo systems—has come a long way since its introduction in July 2001, by Motion Engineering Inc.

By Control Engineering Staff

01/29/2004

Share

SynqNet continues to operate in case of cable breakage or other fault at any node—when configured in a ring topology.

SynqNet —a full digital, high-speed (100 Mbps) synchronous motion control network for intelligent multi-axis servo systems—has come a long way since its introduction in July 2001, by Motion Engineering Inc . (MEI). During the network’s first full production year in 2003, more than 30,000 motion axes were shipped using SynqNet, said MEI in a mid-December meeting with Control Engineering . And SynqNet was designed specifically as a motion network.

Marshall Matheson, MEI director of marketing communications, puts SynqNet firmly into the non-proprietary network category, because of its 'true interoperability.' The network uses standard components, such as CATV wiring and RJ45 connectors for interfacing servo drives, controllers, and I/O modules. SynqNet's physical layer is based on IEEE 802.3 standard and 100base-T silicon; MEI designed the data link and application layers. Field-programmable gate arrays rather than ASICs are used.

A key feature of the network is 'self-healing fault tolerance' to provide the reliability needed in high-performance machine systems. It’s one of requirements coming from machine builders, explains Matheson. In case of a lost connection between nodes, SynqNet reroutes to a second Backup Data Channel within two servo cycles and continues to operate in real time (in a ring configuration). The fault is automatically identified, isolated, and the application alerted to take appropriate action.

Motion Engineering recently introduced 64-bit ZMP-SynqNet controller designed to operate on the network at servo update rates as high as 48 kHz. Production shipments for ZMP controller are slated for early Q204.